condition	mean	min	max
4 h after light	8.080449999999999	7.60704	8.55386
8 h after light	8.60659	8.34555	8.86763
12 h after light	13.386500000000002	12.845	13.928
4 h after dark	19.664	18.9247	20.4033
8 h after dark	15.52135	15.0166	16.0261
12 h after dark	14.364049999999999	14.2758	14.4523